Improvement in machines for bending iron-pipe for welding



WOODWORTH, BRAWDY & MERITHEW. Bending Iron Pipe. N0.109,094. PatentedNov 8,1870.

N. PEIERS, FHOTO-LITHOGRAPHER, WASHINGTON. T c

I aura sitter that cam.

ELON G. WOODWORTH,

JOHN BRAWDY, AND FITCH MERITHE W, OF -BIR-' MINGHAM, PENNSYLVANIA.

Letters Patent No. 109,094, dated November 8,1870; antedated October 29,1870.

M* IMPROVEMENT IN MACHINES FOR BENDING IRON-PIPE FOR WELDING.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern; Be it known that we, ELON G. Woonwonrn, Jour: BRAWDY, and FITCH Mnnrrnnw, all of Birmingham, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Machine for Bending Iron for Iipe for Welding; and we dohereby declare-that the following is a full, clear,

and exact description thereof, reference being had to the accompanyingdrawing and to the letters of reference marked thereon.

The nature of our invention consists in the combination and arrangementof rolls constructed, arranged, and operating with relation to eachother, as hereinafter described.

To enable others skilled in the art to make and use our invention, wewill proceed to describe more fully its construction and operation.

In the accompanying drawing which forms part of our specificati0n Figurel is aback-end elevation of ourimprovemeut in machine for bending pipe'for welding.-

Figure 2 is a front-end elevation of the same.

Figure 3 is a side elevation of the same.

Figure 4 is a top view or plan of the same.

Figure 5 represents the shape of the iron, (when viewed incross-section) of which the pipe is formed after it has passed throughthe first pair of the rolls.

Figure 6 represents the same iron after it has passed through the nexttwo pair of rolls.

In the accompanying drawing-- 0 represents the base of the machine.

m represents the sides of the frame, in which the bearings for thejournals of the rolls A, B, O, and D,

. are placed.

n represents a cross-bar, in which are pivoted the upper journals of therolls 0 and f, the lower jour- 'nals of which are pivoted in the base 0of the niachine. The rolls 0 and D are the first or front pair.

The roll 0 is provided with a tongue or projection, k, and the roll D isprovided with a groove, 1, which, in position and form, corresponds tothe form and po- 1sitiou of the tongue or projection k on the rolls 0,

so that a space is left between the groove and tongue which, in forcorresponds to the shape of the iron shown in cross-section in fig. ,5.

The rolls 6 and fare arranged in a vertical position midway between thefront and back pairs of the rolls, and are so arranged with relation tothe tongue is and groove 1 of the rolls 0 and D, that theywill press inthe edges as of the iron as it leaves the'rolls O and D, so that it willpass readily into the grooves g and s' of the rolls B and A, whichgrooves are of like form; but the groove s has a tongue, it, placed inthe center of it.

The tongue h is used for the purpose of forming the opening at, whichextends the whole length of the the pipe. The rolls A, B, O, and D, areprovided with suitable driving-gear, so arranged that the motion of therolls 0 and D will correspond with the motion of the rolls A and B.

As the construction and arrangement of our improvemeut in machine forbending iron for pipe, and the relation that the several parts bear toeach other will be readily understood from the foregoingdescription,'audby reference to the accompanying drawing, we will, therefore, proceed todescribe its operation, which is as follows: i

The iron is rolled into fiat bars, of the desired length, width, andthickness, corresponding to the size of pipe desired, as it comes in ahot condition from the rolls; it is then placed in'the groove lot therolls D, and, passing" between the rolls 0 and D, is given the formshown in fig. 5, and, coming in contact with the vertical rolls 0 and f,the edges 2: are bent in, as'iudicated by the dotted lines as shown infig. 5, and then passing into the grooves g and s of therolls B and A,is given the forth shown in fig. 6; it is then ready for being heatedfor the purpose of welding.

By forming iron for pipe in the manner herein described, one furnace andone heating of; the iron is dispensed with in the process ofmanufacturing pipe.

It will readily be observed that stationary guides may be used assubstitutes for the rolls 6 and f.

Having thus described the, nature, construction, and operation of ourimprovement,

hat we claim as of our invention, is,-

The combination and arrangement of the rolls A B G D e f, constructed,arranged, and operating with relation to each other, substantially asherein described, and for the purpose set forth.

ELON G. NVOODWORTH.

JOHN BRAWDY. FITCH MERITHEWr Witnesses I A. O. Jonusrou, JAS. G.Tnonrrsox.

